Question

A, B, C and D are outcomes of a random experiment. Then the value of x is _____

$\begin{array}{cc}\text{E}& \text{P(E)}\\ \text{A}& \text{0.15}\\ \text{B}& \text{0.25}\\ \text{C}& \text{x}\\ \text{D}& \text{0.35}\end{array}$

• A. 0.25
• B. 0.35
• C. 0.15
• D. 0.6

Answer 1

The correct option is A 0.25

Sum of probability of all the outcomes in an experiment is 1.
$\to$ P(A) + P(B) + P(C) + P(D) = 1
$\to$ 0.15 + 0.25 + x + 0.35 = 1
$\to$ x = 1 - 0.75 = 0.25